ASN Wikibase Occurrence # 356150
This information is added by users of ASN. Neither ASN nor the Flight Safety Foundation are responsible for the completeness or correctness of this information.
If you feel this information is incomplete or incorrect, you can submit corrected information.
| Date: | Monday 17 March 1997 |
| Time: | 16:30 LT |
| Type: |  Cessna 425 |
| Owner/operator: | Intersection, Inc., Trustee |
| Registration: | N425TV |
| MSN: | 425-0176 |
| Total airframe hrs: | 3724 hours |
| Engine model: | P&W PT6-135A |
| Fatalities: | Fatalities: 0 / Occupants: 3 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Fresno, CA -
 United States of America
|
| Phase: | Standing |
| Nature: | Unknown |
| Departure airport: | (KFAT) |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
Two pilots and a mechanic were going on a postmaintenance test flight to check the ailerons following control system work. The aircraft maintenance records disclosed that the right brake master cylinder was replaced prior to this flight. In addition, the original PT6-112 engines had been replaced by new PT6-135's with new 4-bladed propellers. The company which installed the engines and props said that the engines and props had not been rigged following installation due to the aircraft's scheduled arrival at the paint shop. The rigging was an open item yet to be accomplished at the time of the accident. The pilot said that prior to engine start, he tested and held brakes. Following engine start, the right brake pedal slowly went to the floor, and the aircraft began moving forward and turning left. He attempted to pump the right pedal to restore brake pressure, but without success. A loaded Cessna Citation was directly ahead of the aircraft, and the pilot intentionally kept the aircraft turning left to avoid the jet as he moved the throttle levers into reverse to stop. When the aircraft failed to stop, he pulled the propeller levers into feather and the condition levers to stop. The aircraft continued to move during this process, and the left wing collided with the parked Cessna 425. Examination of the aircraft by FAA airworthiness inspectors revealed that the engine and prop rigging was out of spec to the point that the propeller blades would not move beyond a zero blade angle. Taxi tests disclosed no anomaly with the brakes, and the engines and propellers as rigged would not provide any braking or reverse thrust. Detailed examination of the aircraft revealed no evidence of brake fluid leakage. The right brake master cylinder was removed from the airplane and tested to factory specifications for a new cylinder.
Probable Cause: failure of the right brake to function, due to the installation mechanic's failure to completely bleed all air from the lines. A factor in the accident was the pilot's decision to fly the unairworthy aircraft before the engine/propeller installation had been fully rigged and tested to specification.
Accident investigation:
 |
|
Sources:
NTSB LAX97LA125
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 12-Mar-2024 19:36 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
The Aviation Safety Network is an exclusive service provided by:
Quick Links:
| ASN Home | Send Correction / Feedback |
| FSF Home | Disclaimer | Copyright |
| Contact Us | Privacy Policy |
| Press / Media |
CONNECT WITH US:
©2024 Flight Safety Foundation